Trolley-wheel.



Patented Apr. l5, |902.' W. SELLERS.

TROLLEY WHEEL.

IApplication filed Jan. 31,` 1902.)

(No Model.)

rv wl Nrr Sterns .WENT @unica W'ILLIAM SELLERS; OF'HAVERHILL,MASSACHUSETTS.

TROLLEY-WHEEL.

SPECXFXCATION forming part of Letters Patent No. 697,892, dated April15, 1902.

Application lcd January 3l, 1902. Serial No. 92,000. (No model.)

Z0 all whom it 711/04,/ concern.:

Be it known that I, WILLIAM SELLERS, a citizen ot the United States, anda resident of Haverhill, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inrlrolley-Vtheels, of which the following is a specification.

This invention relates to an improved form 0l bearing for atrolley-wheel which enables the wheel to run a long time without atten--tion and with a minimum amount of Wear and which may be readily removedand replaced when it becomes necessary to do so.

For an understanding of myinveniion reference is made to theaccompanying drawings, in Which- Figure lis a side elevation of mydevice in the position of use. Fig. 2 isa central crosssection on line@cof Fig. l. Fig. 3 is an end elevation. Figs. 4 and 5 are detail viewsof one of the bearing-sleeves. Fig. (i isa crosssection on line yy ofFig. 3. Fig. 7is a View of the under side of the device on a reducedscale.

The trolley-Wheel lis of usual form and is supported in the arms 2 ofthe pole 3. The hubs of the Wheel are chambered out to receive thecylindrical bearing-sleeves 4, and an annular partition 5 is formedintegral with the wheel and midway thereof, against which the inner endsof the sleeves 4 are adapted to bear. (See Fig. 2.) Each outer endofsleeves 4 is provided with a flange 6, against which the ends of thehubs bear, and each sleeve is also provided with a centrally-arrangedsquare projection 7, which is adapted to t into a corresponding notchSin the outerend of each of said arms 2. These notches 8 lead in thegeneral direction of the length of the trolley-pole, and the square ends7 of the bearings 4 are held therein by Cotter-pins 9. Each bearin g 4is bored axially from its inner nearly to its outer end to receive analiningshaft lO, which ts tightly therein and serves to better hold thebearings in alinement. The bearing-surfaces of the hubs of Wheel I areprovided with a series of dovetailshaped recesses, which are filled Withgraphite or other suit-able lubricant 1l. An oilhole l2 is providedwhich leads through partition 5 to the space between the bearin gs, and

.pins or screws.

the outer end of said hole is closed by a screwplu g 13.

As the ends of the bearings4 engage opposite sides of the annularpartition 5 they will act as thrust-bearings and hold the Wheel fromlateral movement. The flanges G also act in the same way, so that thewear occasioned by the lateral pressure on the wheel will be distributedupon two bearing-surfaces. The wear on the flanges 6 by the ends of thehubs is reduced to less than 0ne-half what it would be if partition 5Were not elnployed. As the bearing-surfaces at the ends of the hubs,which are ordinarily employed to hold the Wheel` against lateralmovement, soon become worn, so that the Wheel has a very objectionableamount of side play, and as the greater this looseness the greater willbe the possibility of the bearing becoming clogged with dust, it Will beapparent that the inner thrust-bearing, which is formed by the annulariiange 5, in connection with the ends of the bearings 4, and whichrelieves the Wear on the ends of the hub, is highly important andadvantageous. Moreover, this inner thrust-bearing is much more fullyprotected from dust than any other part of the bearing, so that the Wearthereon resulting from dust is much less than on the exposed outerbearings.

Vhen it is desired to remove the wheel from the pole, it is onlynecessary to remove the Cotter-pins 9 and draw the square ends 7 out ofthe slots. The Wheel may obviously be replaced With equal facility. ItWill be observed that as the slots 8 are arranged so that they inclinedownwardly When the pole is in an inclined position the Weight of theWheel Will always force the square ends of bearings 4 into the ends ofsaid slots when the Wheel is running on the trolley-Wire, so that noWear whatever comes on the cotter-pins. These pins, moreover, are insuch a position that they Will not drop out if they do not happen to beproperly bent at their ends.

By boring the holes for the alining-shaft only partly through to theirouter ends a con venient means for holding said shaft in place isprovided Without resorting to the use of Moreover, when oil is intro-lduced through oil-hole 12, which is afterward IOO tightly closed, theoil can escape only by passing over the bearing-surfaces and can notleak by shaft lO, as it would if the bearings et were completely boredthrough to their outer ends. The middle annular space about the shaft lOacts as an oil-chamber, so that the wheel may run a long time withoutlubrication, this capability being materially aided by the graphite inthe hub of the wheel.

From the foregoing description it will be apparent that I have produceda simple and durable construction which is especially advantageous whenused for the purpose for which it is intended.

I-Iaving described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is as follows:

I. A trolley-wheel having two hubs, an annular partition which isarranged between the outer ends thereof, two cylindrical bearings whichare oppositely arranged in said hubs so that their ends engage oppositesides of said partition, an alining-shaft which is arranged in bothbearings, and means for connecting the outer ends of said bearings tothe support of the wheel.

2. A trolley-wheel having two hubs, an annular partition which isarranged between the outer ends thereof, two relatively short bearingswhich are oppositely arranged in said hubs so that their ends engageopposite sides of said partition,4 means for holding said bearings inalinement, and means for connecting the outer ends of said bearings tothe support of the wheel.

3. A trolley-wheel having two hubs, an annular partition which isarranged between the outer ends thereof, two bearings which areoppositely arranged in said hubs so that their ends engage oppositesides of said partition, flanges on said bearings which are adapted toengage the outer ends of said hub, an aliningshaft which is arranged inboth bearings, and means for connecting the outer ends of said bearingsto the support for the wheel.

4. A trolley-wheel having two hubs, two bearings which are oppositelyarranged therein, means for securing the outer ends of said bearings toa support for the wheel, said bearings being axially bored from theirinner ends partly through to their outer endsforming closed recessestherein, and an alining-shai't which has its ends arranged and fitted insaid recesses, said wheel being provided with an oil-passage which leadsto the recess about said shaft between the ends of said bearings.

'Inrtestimony whereof I have afxed my signature in presence of twowitnesses.

WILLIAM SELLERS.

Witnesses:

LoUIs H. HARRIMAN, G. E. UCKER.

